Pull device for sliding doors.



PATENTED NOV. 21, 1905.

L. A. TURNER. PULL DEVICE FOR SLIDING DOORS.

APPLICATION FILED NOV. 19, 1904.

All" H Wi/bwwam UNITED STATES PATENT OFFICE.

PULL DEVICE FOR SLIDING DOORS.

Specification of Letters Patent.

Patented 1\Iov. 21, 1905.

Application filed November 19, 1904. Serial. No. 233,487.

to be a full, clear, and exact description of theinvention, such as will enable others skilled in the art to which it appertains to make and use the same.

For sliding doors I have produced an im proved pull device applied as an attachment to the edge of the door and projected therefrom by a push-pin to form a handhold by which the door may be pulled from its casing to close it, and in the claims appended hereto I will point out the precise novelty of construction wherein my invention resides in connection with the accompanying drawings, in which I Figure 1 shows the pull device in side view as arranged within the lock-case the side plate of which is removed, the pull device and the push-pin being in their normal flush positions with the front lock-plate. Fig. 2 is a like view, the pull device having been projected by the push-pin. Fig. 3 shows the under side of the pull device in perspective. Fig. 4 shows the under side of the knock-lever by which the pull-slide is projected and a stud on said lever which coacts witha stud on the pull device to automatically lock the pull device in its retracted position. Fig. 5 is a horizontal section on the line a b of Fig. 1, showing the studs of the pull-shank and of the weighted arm in engagement to lock the pull in its retracted position. Fig. 6 is a like section on the line 0 cl of Fig. 2, showing the stud of'the weighted arm in the path ofthe end of the pull-shank.

For slidingdoors I have shown a lock of the gravitybolt type by which the doors are locked, and within the lock-case I have shown the pull device in .compact relation with the bolt, the front plate of the case being provided with openings for the lock-bolt, the pull-handle, and the push-pin.

, The pull or handle 1 is adapted to slide in an opening in the front lock-plate 2 and has a shank 3, slidable on the inner wall of the lockcase. The shank has a slot i, and the case has a stud 5 within said slot to limit the inward and outward movement of the pull device. The push-pin 6 is fitted in an opening in the front plate of the lock, and a plate 7, attached to the end of the lock-case and forms a true guidebearing and abutment for the movement of the push-pin. A pair of lugs Sprojects from the inner wall of this guide-plate at right angles to its line of movement and forms a groove. Between the shank-plate of the pull device and the guide-plate of the push-pin a stud 9 projects from the case, and on this stud is fitted a knock-lever 10, the pivot-hub of which has a tooth 11, which engages the groove formed by the lugs of the push-pin plate, while the knocklever arm 12 stands upwardin the path of the inner bar of the pull device and is caused to freely engage it with a knock and push it out when the push-pin is forced inward to rock the lever. A weighted arm 13 stands from the hub of the knock-lever toward the back of the ease and serves to return the push-pin to its normal position flush with the front lockplate.

It is important to note that the force of the push-pin acts directly against the tooth of the knock-lever to rock it to cause it to eject the pull device and that such force is exerted against the push-pin plate, which having a long smooth bearing against the wall of the case causes the push-pin plate to have an easy sliding movement and which is important in preventing the binding of the push-pin in its guide-opening. It will also be noted that while the push-pin proper is fitted in a guideopening in the front lock-plate the guide-plate has a width equal to the space between the side plates, so that three sides of the plate, its edges, and its back have long bearings on the walls of the lock-plates, so that the pin will be free to be moved by a slight pressure of the finger. Another important matter is the lugs 8 form agroove into which the tooth of the pin freely plays to allow the lever to be forced with a free knock against the pull device and to quickly fall away from it, leaving it projected. By this construction the lever and the pull device have no connection, and this contributes to the easy movement of each and allows the pull to receive a blow to knock it out and to be separately closed within the case and the lever to have the function of a knocker.

In pushing the pull device to its normal position I provide means for automatically locking it to the knock-lever to hold said pull device flush with the front lock-plate, and this means consists of a stud 14, projecting from the weighted arm, and a stud 15, projecting pin, stands against the inner wall of the lower from the shank of the pull device, the studs being so disposed that when the pull device and the push-pin are in their normal positions the studs will engage each other, as shown by dotted lines in Fig. 1, the stud of the weighted arm standing across the outward path of the stud of the pull-shank, thereby holding the latter within the case. That this engagement of the studs may be automatically effected the inner end of the pull-shank is reduced in thickness to form a cam projection 16 on the surface of the thicker part of the shank. In the normal position of the weighted arm the knock-lever will cross the reduced part of the pull-shank and the stud of the weighted arm will stand in the path of the inner end of the pull-shank, and would thereby prevent the latter from being forced to its normal position into the lock-case, as in Fig. 6. When, therefore, the pull-shank is pushed in, its surface cams engage and force the lever sidewise away from the pull-shank and allows the end of the latter to pass the stud of the weighted arm, as in Fig. 5. In this movement of the slide the incline of the shank-stud will pass under the incline of the weighted-arm stud, thereby slightly raising the weighted arm and allow the studs to pass each other, when the arm-stud will drop in front of and form a stop against the outward movement of the pull-shank. In this position of the weighted arm it is free to be raised by the push-pin to throw the knock-lever against the pull and push it out and to carry the shank-stud away from the armstud. This knocking action of the lever is shown in Fig. 1, as in the normal relation of the pull device and the lever the latter stands away from the knocker-bar of the pull device.

The way by which the lever is caused to have a knocker function to eject the pull is that the lever has no connection with the pull, that in their normal positions there is a space between them, as in Fig. 1, and that in this position the free end of the weighted lever rests on the case, so that it will be lifted with a quick knock against the knocker-bar of the pull. While this knocker blow gives an easy ejectment of the pull, it allows the weighted arm to be raised sufficient to carry its stud up and out of engagement with the stud of the pull-shank before the end of the knocker-lever strikes the knocker-bar of the pull, thus leaving the latter free to be ejected by the blow.

While I have shown a lock of the latch type for locking the sliding doors, no claim is made to such invention in this patent, as such matter is made the subject of a separate and distinct application filed by me of even date herewith.

I claim 1. In a sliding-door pull and in combination with a push-pin, a pull having a shank, means for limiting its movements, a lever adapted to engage the push-pin, and having a weighted arm, the contiguous surfaces of said pull-shank and said weighted arm having each a stud adapted to be automatically engaged to lock the pull in its normal position.

2. In a sliding-door pull and in combination, a push-pin, a pull, its shank having a cam formation on one side and provided with a stud,

a lever havinga weighted end and a stud thereon adapted to automatically engage the stud of the pull-shank, whereby the said studs are caused to pass each other in closing the pull within the case to lock it in its normal position with said weighted arm.

3. In a sliding-door pull and in combination with the case, the push-pin having a guideplate seated against the inner wall of the case, and having a groove on its inner wall standing transversely of the guide-plate, a lever having a weighted arm mounted in the case and having a tooth on said arm engaging said groove, a pull adapted to be pushed out by said lever, and said weighted arm, whereby an easy movement and a long bearing is given the push-pin.

4. In a pull for sliding doors, the pull device having its shank provided with a surface stud, a knocker-lever having a weighted arm provided with a surface stud arranged to engage the stud of the pull device, and a pushpin connected with said lever, the said weighted arm in its normal position supported upon the case to hold the lever away from the pullknocker, and allow said weighted lever to be raised to disengage the said studs before the blow of the lever is delivered upon the pull to eject it.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

LUCIUS A. TURNER. Witnesses:

F. E. MILLER, H. MOULTON SMITH. 

